668-0011 Rabbit Semiconductor, 668-0011 Datasheet - Page 61

• Manufacturer Part Number: 668-0011
• Description: IC MPU RABIT3000A 55.5MHZ128LQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 668-0011

• Rohs Status: RoHS non-compliant
• Processor Type: Rabbit 3000 8-Bit
• Speed: 55.5MHz
• Voltage: 2.5V, 2.7V, 3V, 3.3V
• Mounting Type: Surface Mount
• Package / Case: 128-LQFP
• Features: -
• Other names: 316-1043

Chapter 5 Memory Management
Bit(s)
Bit(s)
Bit(s)
Bit(s)
7:1
7:0
7:0
7:2
1:0
0
Stack Limit Control Register
Stack High Limit Register
Stack Low Limit Register
RAM Segment Register
Value
Value
Value
Value
00
01
10
11
0
1
These bits are reserved and should be written with zeros.
Disable stack-limit checking.
Enable stack-limit checking.
Lower limit for stack-limit checking. If a stack operation or stack-relative
memory access is attempted at an address less than {STKLLR, 0x0010}, a stack-
limit violation interrupt is generated.
Upper limit for stack-limit checking. If a stack operation or stack-relative
memory access is attempted at an address greater than {STKHLR, 0x00EF}, a
stack-limit violation interrupt is generated.
Compare value for RAM segment limit checking.
Disable RAM segment limit checking.
Select data-type MMU translation if PC[15:10] is equal to RAMSR[7:2].
Select data-type MMU translation if PC[15:11] is equal to RAMSR[7:3].
Select data-type MMU translation if PC[15:12] is equal to RAMSR[7:4].
(STKHLR)
(STKLLR)
(RAMSR)
(STKCR)
Description
Description
Description
Description
(Address = 0x0444)
(Address = 0x0445)
(Address = 0x0446)
(Address = 0x0448)
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